Bug 175824 - Link monitor not documented for RHEL3
Summary: Link monitor not documented for RHEL3
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Cluster Suite
Classification: Retired
Component: rh-cs-en
Version: 3
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Paul Kennedy
QA Contact: Cluster QE
URL: http://www.redhat.com/docs/manuals/en...
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2005-12-15 15:27 UTC by Paul Kennedy
Modified: 2015-04-20 00:46 UTC (History)
4 users (show)

Fixed In Version: 3.4
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2008-01-16 21:56:20 UTC
Embargoed:


Attachments (Terms of Use)

Description Paul Kennedy 2005-12-15 15:27:50 UTC
Description of problem:

Although Link Monitor was added to Red Hat Cluster Suite 3, information about
enabling it is not available. Information about setting Link Monitor should be
documented here:

http://www.redhat.com/docs/manuals/enterprise/RHEL-3-Manual/cluster-suite/s1-add-service.html#S2-CONFIG-SERVICE-IP

The feature monitors the link status of the Ethernet device to which the
relevant IP address is assigned and will return a status failure if the MII does
not report that there is a link detected.


Version-Release number of selected component (if applicable):

rh-cs(EN)-3-HTML-RHI (2004-06-04T17:42)


How reproducible:

N/A


Steps to Reproduce:

N/A


Actual results:

N/A


Expected results:

N/A


Additional info:

The following questions were asked during discovery of this bug and may need to
be documented also:

1. Is monitor links function related to only  
   usr/lib/clumanager/services/svclib_ip?
2. What is relevant IP address?  Dose it mean only service IP, right?
3. When does this monitor links function work? Does it detect link down
   all the time? Or does it only work when any service is started ?

Comment 1 Paul Kennedy 2005-12-20 17:39:08 UTC
Originally, it looked like the problem could be resolved with text shown in
"Description of Problem"; however, additional questions arose. Refer to
"Additional info".

Reassigned to Lon Hohberger. Need resolution of questions listed in "Additional
info" that originally appeared in cluster-list thread.

Lon, when the questions are reconciled, please reassign back to me. Thanks.

Comment 2 Lon Hohberger 2005-12-20 21:59:32 UTC
(1) Monitor links only corresponds to links on devices where cluster service IP
addresses reside.  All other system links are ignored.

(2) 'Monitor link' is a per-service-IP-address attribute, and only monitors the
link for the given service IP address.

(3) This checks on start and every time a service check ("status") run occurs. 
Service checks only occur if you have a service check interval defined.  If your
service check interval is 0, no link status monitoring occurs except at service
start.

[3.b] If multiple service IP addresses are assigned to the same network device,
the link will be checked each service IP assigned to that network device which
has the 'monitor link' option set.

Comment 3 Paul Kennedy 2006-01-06 16:12:58 UTC
Updated draft and submitted for technical review. Lon, when review is complete,
please assign back to me. Thanks.

Comment 4 Lon Hohberger 2006-02-02 18:43:21 UTC
The update you sent me on 1/5 looks wonderful.

Comment 5 Paul Kennedy 2006-02-02 21:27:28 UTC
Thanks. When I post the change, I'll close this out.

Comment 6 Paul Kennedy 2006-02-03 23:19:47 UTC
Changes checked in to CVS. Requested push to redhat.com docs page.

Comment 7 Paul Kennedy 2006-03-21 21:43:14 UTC
Changed documentation is now available under the heading of "Red Hat Cluster
Suite 3" on redhat.com/docs:

http://www.redhat.com/docs/manuals/csgfs/




Comment 8 Michael Hideo 2007-06-06 05:01:58 UTC
Adding ecs-dev-list for wider coverage

Comment 9 Michael Hideo 2007-10-23 02:48:48 UTC
Removing automation notification

Comment 10 Paul Kennedy 2008-01-16 21:56:20 UTC
Closed. As noteded earlier, updated content is available here:
http://www.redhat.com/docs/manuals/csgfs/

More specifically, updated content is here:
http://www.redhat.com/docs/manuals/csgfs/browse/rh-cs-en-3/s1-add-service.html


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